Mohammed listed the steps that occur when a solar cell generates electricity. 1: Solar energy is absorbed by the cell.
2: Free electrons move to the front of the cell.
3: Electrons begin to move.
4: Electrons flow as electricity.

Which best explains how to correct Mohammed’s error?

Switch steps 2 and 3.

Switch steps 3 and 4.

Move step 1 to appear after step 4.

Move step 4 to appear after step 1.

Every compound can be represented by a chemical formula. a chemical formula is the set of symbols showing the elements that make up a compound and their proportions. water’s chemical formula is h 2 2 o. that means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. a molecule is a group of two or more atoms bonded together. molecules can range in size from two to thousands of atoms. a molecule of a compound is the smallest unit of that compound. every molecule of water has all the physical and chemical properties of water. that’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! which of the following is a true statement? a every molecule of the same compound will have different properties. b every molecule of a compound has the same proportion of elements. c molecules can be physically separated into smaller units of a compound. d molecules cannot be represented by chemical formulae.

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

Which statement best describes a typical difference that could be found between the “analysis” and “conclusion” sections of a lab report?